Pseudorhabdosynochus lantauensis is a diplectanid monogenean parasitic on the gills of the longtooth grouper, Epinephelus bruneus.

The type-host is the longtooth grouper, Epinephelus bruneus and the type-locality is near Hong-Kong.

[2] Other host fish species, such as the orange-spotted grouper Epinephelus coioides have been mentioned.

[3] The life-cycle of Pseudorhabdosynochus lantauensis has been described, as a parasite of the orange-spotted grouper Epinephelus coioides, at a temperature of 30 °C.

The free-living and swimming larva, the oncomiracidium, is viable for 4-8 h and should find a host within this delay.